Railway truck structure



Feb. 20, 1945.

J, c. TRAV ILLA, JR

RAILWAY TRUCK STRUCTURE 2 Sheets-Sheet 1 Filed May 28, 1942 INVENTOR:JAMES C.TRAVILLA JR.

.BY (a j fiw ATTORNEY FIGZ.

Feb. 20, 1945- J. c. TRAVILLA, JR 2,369,991

RAILWAY TRUCK STRUCTURE Filed May 28, 1942 2 Sheets-Sheet 2 INVENTOR:JAMEs C.TRAVILLA an PATToRNEY V///%QE7 sides of the journal boxes.suspended from the truck frame, carry cross Pumas Feb. 20,1945

2,809,991 v asmwsr 'raUcx s'ranc'rnan I James O. Travilla, Jr.,Swartlunore, 2a., alolgnor to General Steel Castings Corporation,Granite City, 11]., a corporation of Delaware Application May 28, 1942,Serial No. 444,811

4 Claims.

The invention relates to railway rolling stock, and more particularly tothe anchoring of relatively movable main parts of a railway truck toeach other. so that desired movements may be accommodated and othermovements may be resisted. Anchoring devices for the same, generalpurpose are described in V. L. Green Reissue Patent 21,987,reissued'December 30, 1941. Such anchoring devices have includedyielding cushions of rubber-like material between the ends of the deviceand the truck parts to which it is connected.

The main object of the present invention is to anchor relatively movabletruck parts to each other by a device of the general type referred towhich will not require the use of rubber to accommodate the relativemovement of the truck parts connected by the device and which can easilybe adjusted to provide the desired frictional resistance againstrelative movement of the truck parts and to take up wear.

This and other detailed objects of the invention as will appear beloware attained by the structure illustrated in the accompanying drawings,in which- Figure 1 is a top view of one half of a fourwheeled truck, theparts shown being substantially duplicated at the other end of thetruck.'

Figure 2 is a side elevation of the structure shown in Figure 1.

Figure 3 is a vertical transverse section taken on the line 3-3 ofFigure 1.

Figure 4 is an enlarged detail of one end portion of one of theanchoring devices.

Figure 5 is a similar enlarged section illustrating the action of thedevice when the truck main parts connected by it shift relative to eachother.

The general truck structure is 'well known in the art and compriseswheels I, axles 2, jour- At the same time. it is necessary to hold thebolster against movement longitudinally of the truck, which would resultin its striking the transverse transoms ll of the frame,.-and to attainthis result there is provided an anchoring device I! at each side of thetruck, each device extending longitudinalhr of the truck and having itsopposite ends connected to an upright flange It on a frame bracket l1and to an upright flange It on a bolster bracket IS. The connections atthe opposite ends of the anchoring device are preferably, but notnecessarily, identical and the left hand connection is detailed inFigures 4 and 5, Figure 4 illustrating the position of the partswhen theframe and holster are in theirnormal' relation and Figure 5 illustratingthe parts when the bolster and frame have shifted relative to each othertransversely of the truck.

Jaws are applied to opposite sides of the bracket web, It for example.Each jaw comprises a segment of a sphere, there being an annular lip orboss 2| projecting from its flat side into an aperture 22 in web ii. Thespherical outer face 23 of each jaw fits in a correspondingly concavesurface of a seat or bearing member 24. A tubular spacer 25 extendsbetween the inner bearing member 24 adjacent the frame flange and thecorresponding inner bearing member adjacent the bolster flange.Preferably the spacer structure includes a relatively large diameterdisc 26 for a purpose referred to below.

- This disc' maybe welded to the tube, as indinal boxes 3, equalizers 4extending between jour- I nal boxes at the same side of the truck andmounting coil springs 5 which support the truck frame 6 provided withpedestals I at opposite Swing hangers 8,

bars 9 and a spring plank III which supports coil springs Ii carryingthe bolster i2 having a center plate It on which the car body (notshown) is mounted. This construction provides for substantial movementof the bolster and frame relative to each other vertically of the truck.due primarily to the action of springs ll,

cated at W. A similar disc 21 is applied to the outer bearing member 24and may include one or more shims 28. If desired, shims similar to shim28 may be provided between member 24 and disc 28. A rod 29 extendsthrough elements 25, 26, 24, 20, I6, 21, and 28, and a nut 30, threadedonto the end of the rod, provides means for clamping the elementstogether, whereby frame flange I8 is gripped by jaws 20 and all of theparts are held against movement towards and transversely of the truck,due primarily to the swinging of hangers I.

the end of the rod. The nuts 30 also provide means for adjusting thedevice so that the desired frictional resistance against movement of thetruck parts can be obtained and at the same time wear between thefrictional surfacescan be taken up.

The opposite end of the rod is shown as provided with a bolt head. 31(Figures 1 and 2) but both ends of the rod may be threaded and providedwith nuts I. if desired.

When the bolster and truck frame shift relative to each'othertransversely of the anchoring device, whether vertically or laterally ofthe truck. laws 20 will not move relative to the frame or bolsterflanges It and il gripped between them but the other parts of the devicewill ride over the spherical surfaces on the jaws, centered at A', tothe position shown in Figure 5 without oifering substantial resistanceto the relative shifting of the truck parts or to the inclination of theanchoring device from its normal position perpendicular to-flanges IIand II. The interconnected truck parts will not move longitudinally ofrod 2! or spacer 25, although there will be a slight movement of thebolster longitudinally of the frame due to the inclination of theanchoring device from the normal position indicated in Figure 1. Suchrelative movement of the bolster and truck frame is immaterial since itwill be too small to permit these truck parts to contact with eachother.

' By providing the large diameter disc 26, 21,

I as shown, the elements and 24 between these discs are interchangeablewith cushions of rubber-like material, as described in theabovementioned Green Reissue Patent 21,987, which could be substitutedfor elements 20 and 24 as indicated at C in Figure 4. If the inclusionof this interchangeable feature is not desired, then discs 28 maybelomitted and tube made longer or members 2| made-thicker accordingly.

Figures 1 and 2 show the ball Joint connection device at each end of theanchor structure, and this is the preferred arrangement, but theinvention may be embodied in a structure in which a different type ofpivotal connection is provided at one end of the anchor structure, suchas, for example, the gripping of one of the truck parts between rubberpads, as mentioned'above, or by any other universal Joint type ofpivotal connection.

These and other variations in the details of the structure may be madewithout departing from the spirit of the invention and the exclusive useof such modifications as come within the scope of the claims iscontemplated.

What is claimed is:

1. In structure for anchoring one railway truck part to anotherrelatively movable truck part, an elongated arm provided with device atits opposite ends for pivotally connecting the structure to the truckparts, at least one of said devices including a pair of'iaw elementswith substantially flat, opposing faces adapted to receive and clamp thetruck part between them and with their outwardly facing surfacescomprising separable sections of a sphere, seat members having concavespherical surfaces receivmg the spherical surfaces of said Jaw elements,and means on said Jaw elements for engaging the truck part between thejaw elements to hold the law elements against movement relative to thetruck part transversely of the arm.

2. In structure for anchoring one railway truck part to anotherrelatively movable truck part,

opposed laws each having the form of a segment of a sphere with theirflat sides facing each other and spaced apart to receive between them anassociated truck part to be anchored, an annular lip projecting fromeach flat side for fitting into an aperture in the associated truckpart, a saucer-like bearing member fitted to the'convex side of eachlaw, an elongated rod extending through the jaws and the associatedtruck part between them centrally of said lips, and means on said rodengaging said members to hold them and said Jaws against movementlongitudinally of the rod and away from each other.

3. A device for connecting two structures so as to transmit thrust in aline from one structure to the other structure while accommodatingrelative movement of the structures transversely of such line,comprising an elongated arm arranged to be disposed with its axis alongthe line of thrust to be transmitted, means for pivoting one end of thedevice to one structure, and means for connecting the other end of thedevice to the other structure and including spaced members on said armheld against movement axially away from each other, each having aconcave bearing surface opposing and spaced from a similar surface onthe other member, said surfaces facing axially of the device, opposingjaws slidably seated on said hearing surfaces so as to tilt thereon andspaced apart axially of the arm to grip between them a portion of one ofthe structures to be connected by the device and provided with a centralboss arranged to be received in an aperture in the structure grippedbetween them.

4. In structure for anchoring one railway truck part to anotherrelatively movable truck part, an elongated rod, a pair of jaws slidablymounted on the rod each having the form of a segment of a spheredisposed transversely of the rod axis and having a boss'projecting fromits flat side axially of the rod for entering an aperture in one of thetruck parts to be anchored, a saucer-shaped bearing member surroundingthe rod and fitted to the convex side of each jaw. and means adjustableaxially of the rod and associated with the bearing members to limitJAMES C. TRAVILLA. JR.

